Beijing Dashiweiye Tech Co., Ltd. Address: Room906,Yifang Building,No.13,Haidian Nan Lu, Haidian District, Beijing Postal code: 100080 Tel: 86-10-82673292 ， 86-10-62545258 Fax: 86-10-82673292 Cell phone: 86-13910030654 ,86-13701036177 http://gas.dashine.com E-mail: market@dashine.com E-mail: sale@dashine.com

Tel: 86-10-82673292 Fax: 86-10-82673292 copyright 2008 Beijing Dashiweiye Tech Co., Ltd relative search: gas monitor gas alarm gas detector